IP Library › Granted Patent US 5,195,580
Granted Patent Utility
US 5,195,580 · App. 07/834,887

Heat exchanger seam and method of making same

Inventor: Russell W. Hoeffken
Patented Case View Patent ↗
Granted: Mar 23, 1993 Filed: Feb 11, 1992
Inventor
Russell W. Hoeffken
Assignee (at issue)
Ehrhardt Tool and Machine Co., Inc.

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Quick Facts
Patent No.
US 5,195,580
App. No.
07/834,887
Filed
1992-02-11
Granted
1993-03-23
Kind
A